1 /* $NetBSD: intr.h,v 1.2 2018/04/19 21:50:07 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas of 3am Software Foundry.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #ifndef _OR1K_INTR_H_
33 #define _OR1K_INTR_H_
34
35 #ifdef _LOCORE
36 #error use "assym.h"
37 #endif
38
39 #ifdef _KERNEL
40
41 #ifdef _KERNEL_OPT
42 #include "opt_multiprocessor.h"
43 #endif
44
45 #ifdef MULTIPROCESSOR
46 #define __HAVE_PREEMPTION 1
47 #endif
48
49 /* Interrupt priority "levels". */
50 #define IPL_NONE 0 /* nothing */
51 #define IPL_SOFTCLOCK 1 /* clock */
52 #define IPL_SOFTBIO 2 /* block I/O */
53 #define IPL_SOFTNET 3 /* software network interrupt */
54 #define IPL_SOFTSERIAL 4 /* software serial interrupt */
55 #define IPL_VM 5 /* memory allocation */
56 #define IPL_SCHED 6 /* clock interrupt */
57 #define IPL_HIGH 7 /* everything */
58
59 #define NIPL 8
60
61 /* Interrupt sharing types. */
62 #define IST_NONE 0 /* none */
63 #define IST_PULSE 1 /* pulsed */
64 #define IST_EDGE 2 /* edge-triggered */
65 #define IST_LEVEL 3 /* level-triggered */
66
67 #define IST_LEVEL_LOW IST_LEVEL
68 #define IST_LEVEL_HIGH 4
69 #define IST_EDGE_FALLING IST_EDGE
70 #define IST_EDGE_RISING 5
71 #define IST_EDGE_BOTH 6
72 #define IST_SOFT 7
73
74 #include <or1k/pic/picvar.h>
75
76 static __inline void
spl0(void)77 spl0(void)
78 {
79 (void)_spllower(IPL_NONE);
80 }
81
82 static __inline int
splsoftclock(void)83 splsoftclock(void)
84 {
85 return _splraise(IPL_SOFTCLOCK);
86 }
87
88 static __inline int
splsoftbio(void)89 splsoftbio(void)
90 {
91 return _splraise(IPL_SOFTBIO);
92 }
93
94 static __inline int
splsoftnet(void)95 splsoftnet(void)
96 {
97 return _splraise(IPL_SOFTNET);
98 }
99
100 static __inline int
splsoftserial(void)101 splsoftserial(void)
102 {
103 return _splraise(IPL_SOFTSERIAL);
104 }
105
106 static __inline int
splvm(void)107 splvm(void)
108 {
109 return _splraise(IPL_VM);
110 }
111
112 static __inline int
splsched(void)113 splsched(void)
114 {
115 return _splraise(IPL_SCHED);
116 }
117
118 static __inline int
splhigh(void)119 splhigh(void)
120 {
121 return _splraise(IPL_HIGH);
122 }
123
124 typedef uint8_t ipl_t;
125 typedef struct {
126 ipl_t _ipl;
127 } ipl_cookie_t;
128
129 static __inline ipl_cookie_t
makeiplcookie(ipl_t ipl)130 makeiplcookie(ipl_t ipl)
131 {
132
133 return (ipl_cookie_t){._ipl = ipl};
134 }
135
136 static __inline int
splraiseipl(ipl_cookie_t icookie)137 splraiseipl(ipl_cookie_t icookie)
138 {
139
140 return _splraise(icookie._ipl);
141 }
142
143 #endif /* _KERNEL */
144
145 #endif /* _OR1K_INTR_H_ */
146